Forge



CI. KARRAL Nov. 3 1925- FORGE Filed May 21. 199-4 2 Sheets-Sheet 11520920602: 67/464,215 Meaq,

1/3 War/reg Nov. 3 1925. 1,560,259

c. KARRAL FORGE Filed May 21, 1924 2 Sheets-Sheet 2 I f 1 I I 1Wifimsgaw: 1720922507:

it' l-mil a I rarer Pics.

CHARLES KARRAL, OE DANVILLE, ILLINOIS.

FORGE.

Application filed May 21, 1924. Serial No. 714,929.

To all whom it may concern.-

Be it known that l, GHA

citizen of the DH-HJlllfll, in the county of Vermilion and State ofIllinois, have invented certain new and useful Improvements in Forges,of which the following is a specification.

This invention relates to forges and more particularly to oil forges forheating small steel tools or other articles, and has for one of itsobjects the provision of a forge adapted to use a low grade or cheap oilas the heating medium.

Another object is to provide a novel form of forge body includingseparate combustion and heating chambers whereby more completeiombustion of the fuel is had, and, therefore, excessive oxidation ofthe metal articles being heated is eliminated.

A further object is to provide a novel form of oil burner, for forges ofthe class described, adapted to efficiently burn a very low grade ofoil, commonly known as black jack, which is much cheaper than thecheapest crude oils.

A still further object is to provide a forge having the novelconstruction, design and combination of parts hereinafter described andillustrated in the arcompanying drawings.

In the drawings, Figure 1 is a front elevation of a forge embodying myinvention.

Figure 2 is a sectional elevation on the line li ll of Figure 1.

Figure 3 is a sectional elevation on the line lll-lll of Figure 2.

Figure l is an enlarged elevation of the fuel burner.

Referring more particularly to the drawings, the hollow body of theforge, which is substantially rectangular in shape, is designatedgenerally by the letter A, and is composed of front and rear side walls2 and 3, end walls t and 5 and top and bottom walls 6 and 7,respectively.

The body A has an interior lining 8 of lirc-bricl:, one its relativelynarrow hollow interior is divided into a combustion chamher 9 andheating chamber 10 by a horizontal wall 11 extending from the end wall lof the body to within a short distance of the other end wall 5, so as toleave a small opening 12 for the heat and products of combustion to passfrom the chamber 9 into the chamber 10.

The body of the lithium, a

forge is supported at its i, nitec States. and resident of corners byangle iron binding members 14, which also support a bottom plate 15, andthe angle members Tol (-.Fitl1(l materially below the plate 15 forming16 to support the forge above the floor level. The angle members 14 aretied together by suitable tie bolts or rods 18, which extend from cornerto corner of the body.

A flue 19 extends upwardly from the floor along the rear side of thebody A and communicates through a horizontal flue passage 20 with theheating chamber 10, ad acent the end opposite from the opening 12,forming communication between the chambers 9 and 10. The flue 19 isprovided with a damper 21 for regulating the draft therethrough.

The front side wall 2 is offset along the chamber 10 and made thinnerand provided with two rows of openings 22 for receiving the articles tobe heated. A shelf member 23 is mounted below each of the rows ofopenings 22 and are adapted to support detached closure members 24.,which may conveniently be separate bricks, adapted to be moved intoposition to close or open the article receiving openings 22.

The end wall l is provided with an opening 25 communicating with theheating chamber 9 and through which a liquid fuel or oil burner Bprojects.

The opening 25 is considerably larger than the burner B and is providedwith a removable closure 26, which closure is adapted to removed topermit access to the chamber 9 when igniting the burner.

The burner B comprises a tubular casing or conduit 27, a conduit 28 ofrelatively small diameter extending through the closed rear end of theconduit 27 and terminating at the forward end of the conduit 27, and athird conduit 29 of relatively smaller diameter than the conduit 28extending through the closed rear end of the conduit 28 and terminatingat the forward end thereof. Each of the conduits 27, 28 and 29 areprovided with inlet ports adjacent their rear end, to which supplyconduits 30, 31 and 32, respectively, of equal diameter to therespective burner conduits are connected. The conduits 31 and 32 areprovided with valves 38 and 3- respectively for regulating flowtherethrough.

The inner conduit 29 the conduit or pipe and the conduit 28 is isconnected through 32 with an oil supply, connected through the conduitor pipe 31 with a compressed air supply, while the outer conduit orcasing 27 is connected through the conduit or pipe 30, with a suitableblower (not shown) for supplying a forced draft to support combustion.The supply of air to support combustion is varied by varying the blowerspeed.

The operationof this novel form of burner is such that the very lowgrade of oil connnonly known as black jack is readily vaporized andburned. The oil, which is very heavy, will flow out of the forward endof the conduit 29 and be picked up by the compressed air emitted fromthe surrounding conduit or pipe 28 and broken up or vaporized, forming acombustible mixture, and theair supplied by the blower will pick up thiscombustible mixture and carry it into the chamber 9, where due to theperfect vaporization and forced air supply, complete combusition willtake place.

In the general operation of the forge the products of combustion mustpass the entire length of the chamber 9 before they can enter into thechamber 10, and then pass along the chamber 10 the greater part of itslength before they can escape through the flue. Therefore, the greatestamount of heat units are taken from said products of combustion beforethey escape.

This forge provides for the burning of a very cheap fuel, and provides aconstruction in which the heat may be readily regu lated due to thevalved burner supply pipes. It also provides a construction in whichless oxidation of the articles being heated occurs,

due to the practically perfect combustion of the fuel.

Vhile l have shown and described only one specific embodiment of myinvention, it will be understood that I do not wish to be limitedthereto, since various modifications may be made without departing fromthe cope of my invention as defined in the appended claim.

I claim It heating furnace comprising an elongated hollow body portion,said hollow body being provided with a transverse horizontal walldividing its hollow interior into a separate combustion chamber andheating chainber said wall being provided with an opening adjacent oneend of said furnace to permit the products of combustion and heat topass from said combustion chamber into said heating cl amber, a burnerentering said combustion chamber at the end opposite the said openingleading to the heating chamber, a line for the escape of the products ofcombustion leading from said heating chamber, said heating chamber beingprovided with a plurality of openings for the reception of the articlesto be heated, said openings being arranged in horizontal rows,shelf-like supports extending outwardly from the side walls of saidfurnace below said openings} andclosure members mounted on said supportsand adapted to be moved into and out. of closing position with saidopenings.

in testimony whereof I have hereunto set my hand.

CHARLES KARRAL.

